The students select an unknown addition or subtraction fact to place in their pocket. They carry this fact with them for a day and also take it home after school. During the day other students or the teacher ask the students to recall their fact.

At the start of the following day the student selects another fact to place in their pocket.

Note: Known facts may be recorded on an individual chart. Alternatively each student can have a pack of number fact cards that are divided into two piles: the DO KNOWS and the DON'T KNOW. The pocket facts are then drawn from the DON'T KNOW pile.